Question

我有MongoDB文档，其中包含以下数据（xxx）

{ 
   "_id" : "48e5f6b1-026f-48b8-98cb-6572cfa0eaa6", 
   "esti_delivery_time" : "2015-1-1",
   "original_price" : NumberInt(4060),
   "price":109.2,
   "code" : "JS1709137", 
   "updated_at" : ISODate("2017-09-13T06:01:18.000+0000"), 
   "created_at" : ISODate("2017-09-13T03:45:54.000+0000")
}

我想

 SELECT "xxx" with SUM "price" and SUM "original_price"

Answer 1

因为您需要price和original_price元素的总和，这意味着您需要按一些数据（一个或多个元素）对文档进行分组。对于此任务，您需要使用$group aggregator。

MongoDB PHP Driver documentation

示例：

$con = new MongoDB\Client('mongodb://localhost:27017', [], [
    'typeMap' => [
        'root'     => 'array',
        'document' => 'array',
        'array'    => 'array'
    ]
]);
$collection = $con->selectDatabase("db_name")->selectCollection("collection_name");

$cursor = $collection->aggregate([
    [
        '$group' => [
            "_id" => '$code',
            "sum_price" => ['$sum' => '$price'],
            "sum_original_price" => ['$sum' => '$original_price']
        ]
    ]
]);

Answer 2

我的回答：

enter image description here

感谢您的回复

用Mongodb和Laravel选择sum列

2 个答案: